3) Which is the type of load when the phase currents of a 3 phase circuit are same?

4) Which is the type of load if the phase currents of a 3 phase system are different?

5) How many number of watt meter to be used for balanced 3 phase power measurement?

6) Which method is used for 3f power measurement when load is unbalanced?

7) What is the value of power factor when two watt meter readings are equal in 2 watt meter method of power measurement?